@Non_Descript_Member,
@yotsuba428
I think your both wrong in the symbolism... Its doesn't symbolize Fuutaro "swinging" beside her.
Her holding on the chains of the swings... It's representing the "chains or shackles of guilt" that Fuutaro had mentioned elsewhere that's she's holding on to and holding her back. Ch. 56 pg 11 showing Pic of chains... Coincidence Negi using chains there and here throughout this chapter?? Doubt it. I'll uses chains instead of shackles for rest of explanation.
I mentioned elsewhere this last chapter especially shows it... She's hiding her feelings and denying them because she is trying not to be "special" anymore. The beginning of the arc shows how after Kyoto she tried her best to separate from her sisters and stand out and be the best and be "special." But in doing so she was almost separated from her sisters and her sisters lied to make sure they'd stay together. When that happened she said she would no longer try to be "special" and be there for her sisters. And Fuutaro could see that in her and called it "chains of guilt"
Notice the pages of her on the swing and many times emphasizing the chains and she's holding on to them.
Because of that, when she realized Fuutaro was the boy on Kyoto, besides being ashamed she didn't want to reveal herself and want to be "special" to Fuutaro over the rest. Kind of like that crazy equality crap Miku was hung up on too. When she noticed Miku and others started falling for Fuutaro, she put her feelings aside and support her sisters... Again due to the "chains" of guilt she's holding on to... Like holding on to the chains of that swing.
How ya like that explanation. Better than the swing of togetherness eh? 😀 you can be right too. But I am just offering a different spin.
Anyways... I am guessing like how at the end of Miku's arc she was able to find strength at the end... I am guessing this arc will be her breaking free from those chains of guilt.
I guess you can say the Thanksgiving chapter when Fuutaro and Yots were at the swings and the scene where she jumps from the swing and her pure happy expression or freedom or whatever and Fuutaro noticing it... It was a symbolism of her true self when she was able to let go of those chains for a moment when Fuutaro was there.